Provided by: libncarg-dev_6.3.0-6build1_amd64 bug


       NGREOP - reopen an existing NCAR Graphics metafile for appending.


                   NCOLRS, NSTART, CTAB)


       #include <ncarg/ncargC.h>
       #include <ncarg/gks.h>

       void c_ngsrat(int wkid, int conid, int itype, char *fname,
                     int iopt, int *iat, float *rat, int ncolrs,
                     int nstart, Gcolr_rep *ctab)


       WKID        (an input variable of type INTEGER) specifying the workstation identifier that
                   the reopened metafile will subsequently be known by.  This does not have to be
                   the same as the worksttion identifier used to create the original metafile.

       CONID       (an input variable of type INTEGER) specifying the connection identifier.

       ITYPE       (an input variable of type INTEGER) specifying the workstation type.
                   Currently the only valid value is "1".  This subroutine may be augmented to
                   accommodate PostScript files in the future.

       FNAME       (an input variable of type CHARACTER) specifying the filename of the metafile
                   being opened for appending.

       IOPT        (an input variable of type INTEGER) specifying the desired action:

                     = 0   reestablish the color table only (using the color table in argument
                           CTAB described below).  The attributes of the reopened workstation
                           will be set to default values and may well be out of sync with the
                           current GKS attributes.

                     = 1   reestablish the color table and GKS state (the GKS state as supplied
                           in arguments IAT and RAT described below).  The state values will not
                           be flushed to the metafile.

                     = 2   reestablish the color table and GKS state and flush the GKS state
                           values to the metafile.

                     = 3   reestablish the color table and flush the current GKS state values to
                           the metafile (not the values in IAT and RAT).  values to the metafile.

                   If IOPT equals 1 or 2, then IAT and RAT must be supplied, otherwise not.

       IAT         (an input array of type INTEGER dimensioned for 14) that contains GKS integer
                   state variables as follows:

                      IAT( 1) = Clip indicator

                      IAT( 2) = Line type

                      IAT( 3) = Polyline color index

                      IAT( 4) = Marker type

                      IAT( 5) = Polymarker color index

                      IAT( 6) = Text font

                      IAT( 7) = Text precision

                      IAT( 8) = Text color index

                      IAT( 9) = Text path

                      IAT(10) = Text horizontal alignment

                      IAT(11) = Text vertical alignment

                      IAT(12) = Fill area interior style

                      IAT(13) = Fill are style index

                      IAT(14) = Fill area color index

       RAT         (an input array of type REAL dimensioned for 7) that contains REAL GKS
                   attribute settings as follows:

                      RAT( 1) = Linewidth scale factor

                      RAT( 2) = Marker scale factor

                      RAT( 3) = Character expansion factor

                      RAT( 4) = Character spacing

                      RAT( 5) = Character height in world coordinates

                      RAT( 6) = Character up vector, X component in world coordinates

                      RAT( 7) = Character up vector, Y component in world coordinates

       NCOLRS      (an input variable of type INTEGER) that specifies the number of colors in the
                   color table supplied in argument CTAB, described below.  NCOLRS can be 0 .

       NSTART      (an input variable of type INTEGER) that specifies the color index associated
                   with the first color in the color table CTAB (all other color indices are
                   filled in in sequence).  For example, if NCOLRS = 3 and NSTART = 4, then the
                   color values defined in CTAB would be used to define color indices 4, 5, and

       CTAB        (in the FORTRAN version of this routine, a two-dimensional input array of type
                   REAL dimensioned CTAB(3,NCOLRS); in the C version of this routine, a one-
                   dimensional input array of type Gcolr_rep dimensioned ctab[ncolrs]) that
                   specifies a color table used to initialize the reopened metafile.  This color
                   table does not necessarily have to agree with the color table in effect when
                   the original metafile was created.


       The most common usage of NGREOP would be in conjunction with usage of NGSRAT and NGMFTC.
       NGMFTC would be used to temporarily close a metafile and NGSRAT used to save the state of
       the GKS primitive attributes at the time of the close.  To reopen the temporarily closed
       metafile you would call NGREOP with the attribute settings previously saved and a setting
       of IOPT of 2.  NGMFTC can be used to temporarily close a metafile any time after it has
       been opened, even in the middle of a picture.

       NGREOP only reopens the metafile and does not activate it.  It will be necessary to call
       GACWK before sending graphics primitives to the reopened metafile.

       NGREOP can also be used to reopen a previously created metafile - either created in an
       independent job step, or in the same job step.


       The following sequence:

               CALL NGMFTC(1)
               CALL NGSRAT(2, IAT, RAT)

                 ... do stuff

               CALL NGREOP(CALL NGREOP(1, 2, 1, 'gmeta1', 2, IAT, RAT,
                           NCOLS, 0, CTAB)

       would temporarily close the metafile with workstation ID of 1 (in this case a metafile
       with name "gmeta1") and save the GKS state variables at the time of the close.  Then the
       call to NGREOP would reopen the metafile for appending.

       Use the ncargex command to see the following relevant example: pgkex27.


       To use NGREOP or c_ngreop, load the NCAR Graphics libraries ncarg, ncarg_gks, and ncarg_c,
       preferably in that order.


       NGREOP issues the same messages as those issued by GOPWK.


       Online: ngmftc(3NCARG), ngsrat(3NCARG),

       Online URL:


       Copyright (C) 1987-2009
       University Corporation for Atmospheric Research
       The use of this Software is governed by a License Agreement.